Home / 2,741.90-3,782.47-1,956.40

Finding the Fourth Proportional to 2,741.90, 3,782.47 and 1,956.40

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Solution

The fourth proportional to 2,741.90, 3,782.47 and 1,956.40 is: 2,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,741.90 : 3,782.47 = 1,956.40 : x
  2. Step 2: Convert to fraction form
    2,741.90/3,782.47 = 1,956.40/x
  3. Step 3: Cross multiply
    2,741.90x = 3,782.47 × 1,956.40
  4. Step 4: Simplify right side
    2,741.90x = 7,400,024.31
  5. Step 5: Solve for x
    x = 7,400,024.31/2,741.90
  6. Step 6: Final answer
    x = 2,698.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.